From: Samuel Mendoza-Jonas <sam@mendozajonas.com>
To: netdev@vger.kernel.org
Cc: Samuel Mendoza-Jonas <sam@mendozajonas.com>,
"David S . Miller" <davem@davemloft.net>,
Justin.Lee1@Dell.com, linux-kernel@vger.kernel.org,
openbmc@lists.ozlabs.org
Subject: [PATCH net-next v3 4/6] net/ncsi: Don't mark configured channels inactive
Date: Thu, 8 Nov 2018 13:49:07 +1100 [thread overview]
Message-ID: <20181108024909.9897-5-sam@mendozajonas.com> (raw)
In-Reply-To: <20181108024909.9897-1-sam@mendozajonas.com>
The concepts of a channel being 'active' and it having link are slightly
muddled in the NCSI driver. Tweak this slightly so that
NCSI_CHANNEL_ACTIVE represents a channel that has been configured and
enabled, and NCSI_CHANNEL_INACTIVE represents a de-configured channel.
This distinction is important because a channel can be 'active' but have
its link down; in this case the channel may still need to be configured
so that it may receive AEN link-state-change packets.
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
---
net/ncsi/ncsi-aen.c | 17 +++++++++++------
net/ncsi/ncsi-manage.c | 3 +--
2 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/net/ncsi/ncsi-aen.c b/net/ncsi/ncsi-aen.c
index 65f47a648be3..57f77e5d381a 100644
--- a/net/ncsi/ncsi-aen.c
+++ b/net/ncsi/ncsi-aen.c
@@ -57,6 +57,7 @@ static int ncsi_aen_handler_lsc(struct ncsi_dev_priv *ndp,
int state;
unsigned long old_data, data;
unsigned long flags;
+ bool had_link, has_link;
/* Find the NCSI channel */
ncsi_find_package_and_channel(ndp, h->common.channel, NULL, &nc);
@@ -73,6 +74,9 @@ static int ncsi_aen_handler_lsc(struct ncsi_dev_priv *ndp,
ncm->data[2] = data;
ncm->data[4] = ntohl(lsc->oem_status);
+ had_link = !!(old_data & 0x1);
+ has_link = !!(data & 0x1);
+
netdev_dbg(ndp->ndev.dev, "NCSI: LSC AEN - channel %u state %s\n",
nc->id, data & 0x1 ? "up" : "down");
@@ -80,15 +84,16 @@ static int ncsi_aen_handler_lsc(struct ncsi_dev_priv *ndp,
state = nc->state;
spin_unlock_irqrestore(&nc->lock, flags);
- if (!((old_data ^ data) & 0x1) || chained)
- return 0;
- if (!(state == NCSI_CHANNEL_INACTIVE && (data & 0x1)) &&
- !(state == NCSI_CHANNEL_ACTIVE && !(data & 0x1)))
+ if (state == NCSI_CHANNEL_INACTIVE)
+ netdev_warn(ndp->ndev.dev,
+ "NCSI: Inactive channel %u received AEN!\n",
+ nc->id);
+
+ if ((had_link == has_link) || chained)
return 0;
- if (state == NCSI_CHANNEL_ACTIVE)
+ if (had_link)
ndp->flags |= NCSI_DEV_RESHUFFLE;
-
ncsi_stop_channel_monitor(nc);
spin_lock_irqsave(&ndp->lock, flags);
list_add_tail_rcu(&nc->link, &ndp->channel_queue);
diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c
index b8b4e765a04c..b9de5b78c4e9 100644
--- a/net/ncsi/ncsi-manage.c
+++ b/net/ncsi/ncsi-manage.c
@@ -916,12 +916,11 @@ static void ncsi_configure_channel(struct ncsi_dev_priv *ndp)
break;
}
+ nc->state = NCSI_CHANNEL_ACTIVE;
if (nc->modes[NCSI_MODE_LINK].data[2] & 0x1) {
hot_nc = nc;
- nc->state = NCSI_CHANNEL_ACTIVE;
} else {
hot_nc = NULL;
- nc->state = NCSI_CHANNEL_INACTIVE;
netdev_dbg(ndp->ndev.dev,
"NCSI: channel %u link down after config\n",
nc->id);
--
2.19.1
next prev parent reply other threads:[~2018-11-08 2:49 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-08 2:49 [PATCH net-next v3 0/6] net/ncsi: Allow enabling multiple packages & channels Samuel Mendoza-Jonas
2018-11-08 2:49 ` [PATCH net-next v3 1/6] net/ncsi: Don't enable all channels when HWA available Samuel Mendoza-Jonas
2018-11-08 2:49 ` [PATCH net-next v3 2/6] net/ncsi: Probe single packages to avoid conflict Samuel Mendoza-Jonas
2018-11-08 2:49 ` [PATCH net-next v3 3/6] net/ncsi: Don't deselect package in suspend if active Samuel Mendoza-Jonas
2018-11-08 2:49 ` Samuel Mendoza-Jonas [this message]
2018-11-08 2:49 ` [PATCH net-next v3 5/6] net/ncsi: Reset channel state in ncsi_start_dev() Samuel Mendoza-Jonas
2018-11-08 2:49 ` [PATCH net-next v3 6/6] net/ncsi: Configure multi-package, multi-channel modes with failover Samuel Mendoza-Jonas
2018-11-08 22:48 ` Justin.Lee1
2018-11-09 2:17 ` Samuel Mendoza-Jonas
2018-11-09 18:07 ` Justin.Lee1
2018-11-09 21:58 ` Justin.Lee1
2018-11-12 0:38 ` Samuel Mendoza-Jonas
2018-11-13 18:00 ` Justin.Lee1
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